Gas range structure



Sept. 5, 1950 B. PRATT 2, 2 9

GAS RANGE STRUCTURE Original Filed Dec. L8 1939 5 Sheets-Sheet 1 I 1 z! 1 6 62a x I A @D f0 9% 1e ji a I 000 v I 9 0 a: 25 16 C o w w uww 1Q I 2 Best H'a'ii Sept. 5, 1950 B. PRATT 2,521,092

GAS RANGE STRUCTURE Original Filed Dec. 18, .1939 5 Sheets-Sheet 2 Sept. 5, 1950 B. PRATT 2,521,092

GAS RANGE STRUCTURE 5 Sheets-Sheet 5 Original Filed Dec. 18, 1959 Sept. 5, 1950 B. PRATT GAS RANGE STRUCTURE Original Filed Dec. 18, 1939 5 Sheets-Sheet 1 Sept, 5, 1950 I B, PRATT 2,521,092

GAS RANGE STRUCTURE Original Filed Decul8, 1939 5 Sheets-Sheet 5 patented Sept. 5 1956 1 1,0

PATEN'F I burner box of a range.

The manifold or yoke In is best shown in detail in Figures 3 to 9 and consists of a hollow;

body portion 35 of tubular form, preferably rectangular in cross section as shown in Figure '9, and provided at its central portion with an enlarged rearwardly extending boss 36 which is threaded to receive the gas supply pipe ll. As appears in Figure 6, the upper portion of boss 36 is provided with a threaded aperture 31 adapted to receive a nipple such as 38 and on which an oven burner 2 (Figure 1) may be mounted 4 extension 40 of the manifold I 0. Aperture 54 extends entirely through the member 58 and its rear end is closed by a plug 54a. W Gas entering passage 54 will flow into a passage '55 which extends longitudinally'of the body castin 50. As best shown in Figure 16, the passage .55 is formed in the lower portion of a rearward "substantially U-shaped extension 56 of the body so that the oven burner will receive gas substantially directly from the gas supply pipe H. It will be noted that boss 36 is enlarged above the body portion of manifold [0, but does not project below the lower surface of the manifold. This complies with usual working restrictions.

The interior passage 39 of the body portion of manifold communicates with the boss 36 so that gas will flow from the boss and. through the passage to right angled hollow upward extensions 48, one at each end of the body portion l0. As

best shown in Figure 5, each extension 4|] is open at its rear and upper face so that gas may flow from the extension to a valve or valve structure supported upon the latter. In order that a valve structure l3 may be secured to the manifold ID, each upward extension 40 is provided with a flange or car flush with its rear face and having bolt receiving apertures 42 suitably spaced about the same. The flange 4| is preferably of substantially triangular form as illustrated in Figure 4.

Beyond each upward extension 40 the main passageway 39 of the manifold 10 is threaded to receive a plug 43. As shown in Figure 1, one of these plugs may be replaced by a tube leading to a pilot burner.

It will be noted from Figures 3 to 9 that the manifold I 0 is of minimum cross section and that the rear faces of the flanges 4| lie in the same plane as the rear wall of the manifold. By this arrangement, the manifold, as well as such valve structures as are connected thereto, will occupy a minimum space from front to rear of the range.

Also, the fact that the rear surfaces of the flanges 4| are planar enables-these surfaces to be readily and cheaply machined sothat they mayiform an eflicient seal with a burner structure connected thereto.

Thevalve structures A valve structure l3 constructed in accordance with the present invention is best illustrated in Figures 10 to 27. Referring to Figures 13 to 15, it will be observed that each valve structure comprises a body'casting of substantially platelike form and provided with a slightly forwardly projecting front central portion 5| having apertures 52 spaced therein in such arrangement that they will coincide with the apertures 42 of the flange 4| on a manifold H). The body casting 58 also has apertured cars 53 formed upon its ends by means of which the valve structures, and,

thereby the manifold l0, can be connected to and supported upon the front portion of the Such support is, of course, in addition to that provided by the main gas supply pipe I The front projecting portion 5| also includes the mouth of an aperture 54 adapted to be aligned with the outlet of the upper 'in the extension leg 58.

horizontal passage 55 are adapted to be closed by threaded plugs 60, although as has been previously stated, one of these plugs may be replaced by a tube 20 leading to the pilot burner. In this way the pilot burner will receive gas entirely independently of the valves supported on the valve structures I3.

As illustrated by Figure 15, the right hand vertically extended passage 51 has a port 62 extending forwardly therefrom and opening to the front face 50a of the body casting 50. It will be noted that the port 62, serving as a gas supply port, opens to the front face 50a within a seat portion 63 bounded by a slightly forwardly projecting andrectangular shoulder 64. The area defined within the shoulder 64 is divided by a substantially diagonally extending shoulder 65 and a second diagonally extending shoulder which extends between the rectangular shoulder 64 and the'first diagonal shoulder 65. By this arrangement, the area within the bounding shoulder 64 is divided into an enclosure 68 to which the supply port 62 opens, and a relatively large triangular enclosure 69, as well as a smaller enclosure 10. A port 1| extends from the enclosure 69 and through the solid extension 58 of the body casting 58 and, as best indicated in Figure 13, port 1| opens to a threaded bore 12 opening to the rear face of the extension 58. The bore 12 is adapted to receive a nipple 13 which, as subsequently described, is adapted to supply gas to the main burner of a burner device. A port 15 opens from the smaller enclosure 10 to a socket 16 (Figure 13) which carries a nipple 13. Nipple 13 is intended to be connected to the simmer burner of a burner device.

The vertically extended passage 59 of the left hand upward extension 51 of gas supply passage 55 opens through a port to an enclosure or seat portion 8| included in a rectangular en- .closure 63a.bounded by a substantially rectangular shoulder 64a. The enclosure 63a is divided by diagonal shoulders 65a and 66a. The gas supply port 80 opens to the uppermost enclosure 8| of the three enclosures thus defined. From the smaller enclosure 82 there extends a delivery port 83 which opens to the rear of the corresponding solid extension 58 and is adapted to receive a nipple 13. As will be subsequently described, nipple 13 is intended to be connected to the simmer burner of a burner device. The larger enclosure 84 has a port 85 extending rearwardly best shown' in Figure =13 at the right ihand pension of Figure a valve *body member 90 *of rectangular outline and of the form "best shown (in rear elevation) in Figure 25 issea'ted and secured to the right -hand seatporti'on 63 'of the body oasting "ill. The valve body element isllcemprisesa flat frontwa'llBl tsee'also Fig. 13) and has a 'rect'an'gularly extending shoulder Q2 projecting from its rear *face. The space defined -within *the shoulder s2 is -'divided by -"diagonal walls -or shoulders 93 and 9 into a small enclosure 95, a. somewhat larger enclosure 9'6 and a large enclosure 91.

Three ports "are provided through the forward wan 9| "(if the element 93 "as best shown in Fi'gure25andatthe right hand '-portionof*1=igure -14. *Ihe three ports are arranged along an "arcuate line drawn from the center of the -el'e'ment -99, the lowermost port its opening from the chamber 96, the next port W1 opening from the small 1 hamber e5 and'the th'irdport 1-!1-2 "opening lrom the chamber 9'1. When element 96 is applied to the right-hand portien 63 of the body tasting 8D the diagonal shoulders 9' 3 and 94 will be aligned with the diagonal shoulders 65 and '63 of the right-hand enclosure 6-3 -(-Figure '15) and, when thus applied, port *i'fiil of element as will be a supply portgport i!!! will be a simmer "port and port 292 will be a main bnrner port.

The valve body element "90 has four screw receiving apertures therein, one at each corner and extending through the bounding shoulder -92. One of "these apertures, designated by the turmeral ms, is relatively large, while thethree wem-a in'i-n'g apertures Hi5 are somewhat smaller than aperture "Hit. shown "in Figure '-1-5, the right n-and enclosure -63 of body casting 5!? has apertures about its edges and in the shoald-e'r M, the aperture l ir ia in the upper right hand corner "being somewhat larg'er 'than the other three apertures r8541. Theseapertnresare threaded to receive bolts. When the valve body member $9 is applied to the right enclosure "63 with the large lbol t "aperture i 93 thereof aligned with the large threaded aperture l li ia, thediag'enal wal ls 9'53 and "M will thus be exactly aligned with the diagonal walls 65 and E3 of the enclosure as described above. Thus, as shown :at the right hand portion of Figure i l,

the body member aperture 'l ilfl will receive gas item the gas supply aperture :52 of the casting 5%, valve body port i=8! will be position to :supply gas to the simmer supply port 175 of the body oasting .350 and the third valve body port I112 wi-l l-supply gas to body casting port I l. While.

none of these sets of ports are in direct alignment, as indicated in Figure -14, nevertheless the chambers to which they respectively open, are in exact alignment.

The left hand enclosure 53a of casting 5% isalso provided with four threaded apertures at its corner portions, but the iargest of these apertures, designated by the numeral 34a, is at the lower left corner. Thus, in order to secure a body member 83 to the left hand enclosure 63a, is necessary to turn the body member 180 from the position of the body member 9 on the night hand enclosure 63. 'As a result, as 'illus trated in Figure 14, the three ports Hit, till,

and 4-92 0f the bod-y member will be respectively ahgned with the gas supply chamber 81,, simmer chamber 82 and main burner chamber 84.

The turning of the body member on the left hand enclosure 63o, 180 with respect to that ion the left hand enclosure '63 is 'due to the fact tlrat'the simmer burner miaiii'lg passages, her= inafter described, communicate witn the two ihnermos't passages W5 and 936i the rom outlet passages, but, regardless -0 this, as hereinafter "stated, eadh simrner bur-n'er must receive initial flew oigas and valves rotating -in the same direction. 'ifhe use of separable b'euy 'rire'rnber's 'sll renders this possible.

Gaskets of suitable outline 'to term seals "upon shoulders of the "opposed races of the body (casting all and the "body members 96 may be if)! vised as indicated in Figure 13 so the two inenibers l "b'e in seated relation, and the respective chambers on their 'o eosed fa'oes win also be sea-led from each other.

The flow "of gas train a supple port l on to the simmer ort i m and main burner port 40 2' is contrdlled by a -clisc Waive W8 shown in di- :ame'tric section in i igure is and in rear plan in Figur'e 2 Referrin to the latter .figure, it will observed that on its rear surface, theses valve 1 :38 is provided with an arcuate 'groove or passa e "use or 'SllfilCl'Bnt "length to completely bridge "the three ports 486, I'll! and E02, with f a tail *p'cr't 'ii'il extending from its rear end, "tail pert "being or reduced "size, both "as to width and depth. Figure "21 shows the normal position of the disc valve lllB 'uponthe'valve bony when the latter is applied to the nerd .haiid seat or enclosure of the casting 5'3 and Figure '26 shows the normal closed .po'sitio'n of the valve disc "1'88 on a body member '91) when the latter is applied to the left hand seal or enclosure 53a of the body casting Ed. vIt will .be noted that in Figure 26, the .parts are turned 1 8?) with respect to the showlingo'f Figure 2 1.

The valve disc 1168 is adapted to be rotated a handle, not shown, applied to ashaft H2, the

arrangement of the shaft with 'respect to the structure being best shown .in Figures '13 and 1-7. The inner end of shaft H2 is fitted in a socket M3 on the forward taceof the body member .80. .As bestishown in Figure 17, the entire inner portion 0f shaft M2 is flattened along one side "to extend through a keyed aperture H4 in the valve disc 168 so that the :latter will turn with the shaft. An inner housing H-6 encloses "the valve :olisc I08, housing llifi being or substantially cup-shaped dorm and having a ib'owed erociform spring ill positioned ibetween its inner face and the outer face of the disc valve 108. The space within the inner housing l lfi may be filled "with grease to augment "the seal between thebody casting and the disc valve. Innerhobs-- .lng M6 is, in turn, enclosed by an outer housing 1:1 8 through which the outer end of shaft W2 projects. It will be noted thatthe extremeouter portion of shaft H2 is enlarged to provide a shoulder I l 9 "at a proximatel the po'int'at wnieh it passes through the outer housing 1 1'8. However, the central -aperture in "outer housing Ft-8 is of sufficient diameter that the enlarged portion of "shaft H2 inay freely in'ove through the same.

A radially extending plate l 20 is secured to the shaft "H2 'just inwardly of its shoulder H9, this plate being provided at its side edges with intu'rned flanges 121 which -extend along and enclose an arm I22 having a keyed connection with the inner and flattened portion of shaft 112.

Ann 1'2": is held in embraced relation against the plate by a coil spring l 2'3 positioned between the outer surface of "inner housing H6 and the arm 122. Thus the action or the spring lit wiu 7 also be to force the plate I20 against the inner surface of the outer housing H8.

The arm I 22 is provided at its outer end with anoutwardly facing lug I24 with a tip I25 01 reduced size. When the shaft I I2 is in such position that the valve disc I08 carried thereby is in the closed position illustrated in Figures 21 and 26, the lug I 24 on arm I20 will extend through a relatively large aperture I26 in the forward or plate-like surface of outer housing H8 and best shown in Figure 12. The shaft II2 will thereby be positively locked against accidental turning movement. When the shaft II2 is pressed inwardly against the action of spring I23 and turned to the position shown in Figure 22, so as to place the passage or groove I09 of valve disc I08 in bridging relation to the supply port I and the simmer burner port IOI, the arm I22 will be opposite a smaller aperture I21 in the wall of outer housing I I8. Aperture I2! is merely of such size as to receive the reduced and rounded tip I25 on the arm lug I24 with the result that the arm I22 and hence the valve disc I08 will not be locked in the Figure 22 position. However, since the arm I22 is being urged toward the outer housing front plate by the spring I23, the person operating the valves will be given an indication, by a clicking sound, of the fact that the valve disc I08 is at that moment in such position as to deliver gas to the simmer burner.

Further rotation of valve shaft I I2 from the position of Figure 22 to that of Figure 23 will bring the tip I 25 on the arm I22 into engage ment with a second small aperture I28 in the outer housing II8. At this time, the groove I09 of valve disc I08 will entirely bridge the three valve body ports I00, IOI and I02 so that gas will be supplied from the supply port I00 to the simmer burner and main burner of a range. In 'order to reduce the flow to the main burners, that is, reduce the fiow through the main burner supply port I02, the shaft II2 may be stopped just in advance of the position indicated in Figure 23 so that the arcuate leading end of the valve disc groove I09 will not entirely be in alignment with rthe main burner supply port I02. Obviously, if desired, the valve may first be turned to the Figure'23 position, which will be indicated by the engagement of stop tip I25 with aperture I28,

and then may be turned backwardly to give the desired reduced flow to the main burner.

If a reduced flow to both the simmer burner and the main burner is required, the valve disc I08 may be turned forwardly from the position shown in Figure 23 to that illustrated in Figure 24 wherein the tail groove I I 0 of the valve disc I08 is At this position, an extremely reduced flow of gas will be supplied opposite the supply port I00.

to both burners, but the flame will nevertheless be sustained. ,Such a point will, of course, vary with different burners and in order to make this position of thevalve adjustable, a limit plate I 30 including a rearwardly extending flange I3I (Fig. 20) is secured to the inner face of the platelike portion of outer housing I I8. rangement, when the edge of arm I22 contactswith the inturned shoulder I 3I, the valve disc I08 will be in the position illustrated in Figure 24.

By this ar- The desired limit position of the valve can be adjusted by reason of the fact that limit plate I30 is provided with a'small screw I32 which ex tends through an arcuate slot I33 in the outer housing II8. Obviously, the position of the limit plate I30 can be adjusted during assembly of the ;range and when the point at which a reduced flow of gas to both burners has been ascertained.

It will be noted that all meeting or seating faces throughout the valve structure are planar, making it economical to machine and grind these faces to finished form.

It will be understood that all of the devices described herein may be used in a single assembly or may be used separately with other devices.

The terminology employed in the specification is for the purpose of description and not of limitation, the scope of the invention being defined in the following claims.

I claim:

1. The combination in a gas range valve structure, of a body casting having two seat faces spaced thereon, each seat face including a supply port and a burner flow port, the arrangement of one of the ports of one seat face being oppositely arranged with respect to the ports of the other face, ported seat members including front and rear faces of similar form on each of said seat faces, one of said seat members being oppositely arranged with respect to the other and each seat member includin chambers in its rear face respectively opening to the supply and burner flow ports of the corresponding seat face and the chambers having ports opening to the front face of each seat member, and disc valves rotatable on said seat members.

2. A seat member for a rotatable valve and adapted to be mounted upon a manifold having a plurality of ports therein, said seat member having chambers in one face of sufficient size to accommodate various arrangements of manifold ports and so that flow from one such port will be excluded from another such port, the other face of said seat member having ports therein each opening to one of the chambers, the seat member ports being arranged in a circular series so that flow through the same may be controlled by a rotatable valve element.

3. In combination, a gas range manifold casting including a hollow portion to form a gas supply chamber, said hollow portion having a port extending through one wall thereof, said cast- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS r-umber Name Date 1,132,095 Hutchinson Mar. 16, 1915 1,786,330 Bekerley Dec. 23, 1930 1,818,275 Roberts Aug. 11, 1931 1,822,992 Jones Sept. 15, 1931 1,837,080 Stockstrom Dec. 15, 1931 1,879,776 Toelle Sept. 27, 1932 1,879,992 Rogers Sept. 27, 1932 1,968,203 Harper July 31, 1934 2,061,716 Pratt Nov. 24, 1936 2,069,017 Pratt et al. Jan. 26, 1937 2,083,086 Pratt et al. June 8, 1937 2,083,088 Pratt et al. June 8, 1937 2,300,961 Pratt Nov. 3, 1942 

